That's really strange that you're seeing sparks in your new KitchenAid mixer! I've never experienced that with mine. Sparks are definitely not normal and could be a safety hazard. Two replacements with the same issue sounds like a manufacturing defect. Have you tried contacting KitchenAid customer support directly? They might be able to offer some troubleshooting advice or arrange a replacement. It would be helpful if you could share the video somewhere else, like YouTube, and then link it here. Good luck!